Clarke Island Weather Forecast

    • 20
    • 34

    Sunny

    • 23
    • 36

    Partly cloudy

    • 21
    • 25

    Shower or two

    • 19
    • 25

    Cloudy

    • 20
    • 30

    Mostly sunny

    • 20
    • 24

    Possible shower

    • 19
    • 23

    Shower or two

Today 5 Dec Sydney

Mostly sunny. Winds west to northwesterly 15 to 25 km/h turning north to northeasterly 20 to 30 km/h in the late morning and afternoon.

Sydney Enclosed Waters

Sydney Harbour, Pittwater and Botany Bay
Wind
North to northwesterly below 10 knots tending northeasterly 15 to 20 knots in the middle of the day then tending northerly 10 to 15 knots in the late evening.
Seas
Below 0.5 metres.
Weather
Mostly sunny.
Weather Situation
A high pressure system lies over the Tasman Sea, extending a ridge to the north. Northerly winds strengthening by the weekend ahead of a cold front crossing Sydney Waters late Saturday, bringing a fresh to strong southerly wind change in its wake.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Clarke Island Temperature Statistics View More

December Temperature

Sydney (Observatory Hill) (3km)

  • Lowest 2 December, 2025

    13.3 °C

  • Average December

    19.7 °C

  • Highest 3 December, 2025

    26.3 °C

Climate (2020–Present)

Sydney (Observatory Hill) (3km)

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  • Average Low 2020–2025

    14.7 °C

  • Average 2020–2025

    18.3 °C

  • Average High 2020–2025

    23.4 °C
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